Skip to content
Talk to sales Start building
Letta logo

Letta MCP server

Letta is the platform for building stateful agents: open AI with advanced memory that can learn and self-improve over time.

Letta is not a separate install. One Activepieces MCP server exposes it alongside 760+ other apps, behind a single URL.

Start building See the Letta integration
Tools
4
Works with
Any MCP client
Auth
Custom auth
License
MIT, open source
Updated
August 2026

About the Letta MCP server

Connect Letta once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches Letta and 760+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

Letta tools your AI can run

Once connected, your assistant can call any of these Letta actions by asking in plain language.

  • Create Agent From Template

    Creates an agent from a template

    7 fields

  • Create Identity

    Creates a Letta identity

    5 fields

  • Send Message to Agent

    Send message to an agent

    3 fields

  • Get Identities

    Searches for identities in your Letta Project

    5 fields

Triggers

Letta events your agent can watch

These start a run the moment something happens in Letta, so work gets picked up on its own.

  • New Agent

    Triggers when a new agent is created

  • New Message

    Triggers when an agent uses send_message

    1 field

Give your assistant Letta

Connect Letta once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 760+ other apps. Free to start.

Get your server URLTalk to sales

Letta MCP, answered.

No. That is the point of it. One Activepieces server exposes Letta alongside every other piece you connect, so your client keeps a single connection.

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

Connect Letta in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

It can call 4 tools, including Create Agent From Template, Create Identity, Send Message to Agent, and chain them with steps in other apps inside the same run.

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.

Guides using Letta

Letta automation Read our quick guide on Letta automation. Discover how it works, explore common use cases, and learn how Activepieces can help.

More artificial intelligence apps on the same server

Browse all MCP apps
OpenAI

OpenAI

Use the many tools ChatGPT has to offer.

Artificial Intelligence19 actions
AI

AI

Artificial Intelligence6 actions
Medullar

Medullar

AI-powered discovery & insight platform that acts as your extended digital mind

Artificial Intelligence6 actions
PollyBot AI

PollyBot AI

Automate lead management with PollyBot AI chatbot integration.

Artificial Intelligence5 actions · 1 trigger
Camb.AI

Camb.AI

Artificial Intelligence5 actions
Chatbase

Chatbase

Build and manage AI chatbots with custom sources.

Artificial Intelligence5 actions